862 resultados para Branch-and-bound algorithm


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"Revue générale des techniques."

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Vol.3 also called "X. Jahrgang der Publicationen des Oesterreicheschen Alpenvereins

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"Of this first edition of 'The letters of Henry Brevoort to Washington Irving' (limited to three hundred and ten sets printed on special Strathmore paper, and bound in two volumes), two hundred and ninety sets are offered for sale. No other edition will be issued in this form. This is no.

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Endnote on p. 25-26 (reference from p. 3): description of the bill to appropriate state funds for the establishment of the dental college at the University of Michigan.

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Head and tail pieces.

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Sponsored by National Institute of Mental Health, Continuing Education Branch, and University of Chicago, Center for Continuing Education.

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Contents:--Discours...à la distribution solennelle des prix du College de Nouméa, 21 Décembre 1910; Discours...à l'ouverture de la Session ordinaire du Conseil Général le 19 Juin 1912; Discours...à l'ouverture de la Session Budgétaire du Conseil Général le 4 Décembre 1912; Discours le 24 Septembre 1913 à l'occasion de l'inauguration du monument élevé a balade (Nouvelle-Calédonie) pour commémorer le soixantième anniversaire de la prise de possession; Discours...à l'ouverture de la Session Budgétaire du Conseil Général le 20 Novembre 1913; Une France dans le Pacifique austral: La Nouvelle Caledonie, Conference prononcée à la Station de "Paris-Mondial" le 15 Fevrier 1939.

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Reprints of articles which originally appeared in 1911 and 1912, collected and bound by the author.

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List of members for the years 1914-20 are included in v. 1-7, after which they are continued in the Year book of the society, begun in 1922.

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Extracted from United States exploring expedition, 1838-1842. United States exploring expedition. v. XVII.

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Thesis (Ph.D.)--University of Washington, 2016-06

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Information on decomposition of harvest residues may assist in the maintenance of soil fertility in second rotation (2R) hoop pine plantations (Araucaria cunninghamii Aiton ex A. Cunn.) of subtropical Australia. The experiment was undertaken to determine the dynamics of residue decomposition and fate of residue-derived N. We used N-15-labeled hoop pine foliage, branch, and stem material in microplots, over a 30-mo period following harvesting. We examined the decomposition of each component both singly and combined, and used C-13 cross-polarization and magic-angle spinning nuclear magnetic resonance (C-13 CPMAS NMR) to chart C transformations in decomposing foliage. Residue-derived N-15 was immobilized in the 0- to 5-cm soil layer, with approximately 40% N-15 recovery in the soil from the combined residues by the end of the 30-mo period. Total recovery of N-15 in residues and soil varied between 60 and 80% for the combined-residue microplots, with 20 to 40% of the residue N-15 apparently lost. When residues were combined within microplots the rate of foliage decomposition decreased by 30% while the rate of branch and stem decomposition increased by 50 and 40% compared with rates for these components when decomposed separately. Residue decomposition studies should include a combined-residue treatment. Based on C-15 CPMAS NMR spectra for decomposing foliage, we obtained good correlations for methoxyl C, aryl C, carbohydrate C and phenolic C with residue mass, N-15 enrichment, and total N. The ratio of carbohydrate C to methoxyl C may be useful as an indicator of harvest residue decomposition in hoop pine plantations.

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Eukaryotic genomes display segmental patterns of variation in various properties, including GC content and degree of evolutionary conservation. DNA segmentation algorithms are aimed at identifying statistically significant boundaries between such segments. Such algorithms may provide a means of discovering new classes of functional elements in eukaryotic genomes. This paper presents a model and an algorithm for Bayesian DNA segmentation and considers the feasibility of using it to segment whole eukaryotic genomes. The algorithm is tested on a range of simulated and real DNA sequences, and the following conclusions are drawn. Firstly, the algorithm correctly identifies non-segmented sequence, and can thus be used to reject the null hypothesis of uniformity in the property of interest. Secondly, estimates of the number and locations of change-points produced by the algorithm are robust to variations in algorithm parameters and initial starting conditions and correspond to real features in the data. Thirdly, the algorithm is successfully used to segment human chromosome 1 according to GC content, thus demonstrating the feasibility of Bayesian segmentation of eukaryotic genomes. The software described in this paper is available from the author's website (www.uq.edu.au/similar to uqjkeith/) or upon request to the author.

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Neural networks are usually curved statistical models. They do not have finite dimensional sufficient statistics, so on-line learning on the model itself inevitably loses information. In this paper we propose a new scheme for training curved models, inspired by the ideas of ancillary statistics and adaptive critics. At each point estimate an auxiliary flat model (exponential family) is built to locally accommodate both the usual statistic (tangent to the model) and an ancillary statistic (normal to the model). The auxiliary model plays a role in determining credit assignment analogous to that played by an adaptive critic in solving temporal problems. The method is illustrated with the Cauchy model and the algorithm is proved to be asymptotically efficient.

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The identification and quantification of spin adducts and their reduction products (>NOH, >NOR) formed from nitroso compounds and nitrones in EPR and PP during spin trapping techniques have been examined. The nitroxyl yield and polymer bound nitroxyl percentage formed from these spin traps were found to be strongly dependent on the nature of spin trap and radical generator, processing temperature, and irradiation time. The nitroxyl yield and % bound nitroxyl of the spin traps improved significantly in the presence of Trigonox 101 and 2-0H benzophenone. The effect of these spin traps used as normal additive and their spin adducts in the form of EPR-masterbatch on the photo and thermal-oxidation of PP have been studied. Aliphatic nitroso compounds were found to have much better photo-antioxidant activity than nitrones and aromatic nitroso compounds, and their antioxidant activity improved appreciably in the presence of, a free radical generator, Trigonox 101, before and after extraction. The effect of heat, light and oxidising agent (meta-dichloro per benzoic acid) on the nitroxyl yield of nitroso tertiary butane in solution as a model study has been investigated and a cyclic regenerative process involving both chain breaking acceptor and chain breaking donor process has been proposed.